Seat including deployable plate

Abstract

A seat includes a seat back frame and a mounting plate fixed to the seat back frame. A deployable plate is movably engaged with the mounting plate and is moveable away from the seat back frame from an undeployed position to a deployed position. An actuator is coupled to the deployable plate.

What is claimed is: 
     
       1. A seat comprising:
 a seat back frame; 
 a mounting plate fixed to the seat back frame; 
 a deployable plate movably engaged with the mounting plate and moveable away from the seat back frame from an undeployed position to a deployed position; 
 a cushion fixed to the deployable plate; 
 a pyrotechnic actuator coupled to the deployable plate; 
 a bolster and a backrest adjacent to the bolster, the deployable plate being in the bolster and having an inner surface facing the mounting plate and an outer surface facing the backrest; and 
 wherein the cushion is fixed to the outer face of the deployable plate. 
 
     
     
       2. The seat as set forth in  claim 1 , further comprising a covering supported on the seat back frame, the deployable plate being moveable toward the covering from the undeployed position to the deployed position. 
     
     
       3. The seat as set forth in  claim 2 , wherein the deployable plate is between the mounting plate and the covering. 
     
     
       4. The seat as set forth in  claim 1 , the deployable plate being between the mounting plate and the cushion. 
     
     
       5. The seat as set forth in  claim 4 , further comprising a covering supported on the seat back frame, the cushion being between the covering and the deployable plate. 
     
     
       6. The seat as set forth in  claim 1 , further comprising a covering supported on the seat back frame, the deployable plate being disposed between the seat back frame and the covering in both the undeployed position and the deployed position. 
     
     
       7. The seat as set forth in  claim 1 , further comprising a covering supported on the seat back frame and including a tear seam, the deployable plate being between the covering and the seat back frame in the undeployed position, and the deployable plate and the cushion extending through the tear seam in the deployed position. 
     
     
       8. The seat as set forth in  claim 1 , wherein, in the undeployed position, the actuator is disposed between the seat back frame and the deployable plate. 
     
     
       9. The seat as set forth in  claim 1 , wherein the actuator is fixed to the seat mounting plate. 
     
     
       10. The seat as set forth in  claim 1 , further comprising a projection on one of the mounting plate and the deployable plate, and a track on the other of the mounting plate and the deployable plate slideably receiving the projection. 
     
     
       11. The seat as set forth in  claim 1 , further comprising a seat bottom coupled to the seat back frame. 
     
     
       12. The seat as set forth in  claim 1 , further comprising padding covering the seat back frame. 
     
     
       13. The seat as set forth in  claim 12 , wherein the cushion is between the padding and the deployable plate. 
     
     
       14. The seat as set forth in  claim 12 , wherein the deployable plate is between the cushion and the padding. 
     
     
       15. The seat as set forth in  claim 12 , further comprising a covering supported on the seat back frame, the padding between the covering and the mounting plate and between the covering and the cushion.